Sheet transfer mechanism for rolling mills



Aug. 11, 1936. 1.. FRIELINGHAUS SHEET TRANSFER MECHANISM FOR ROLLING MILLS 2 Sheets-Sheet 1 Filed Oct. 25, 1934 Aug. 11, 1936.- \L. FRIELINGHAUS SHEET TRANSFER MECHANISM FOR ROLLING MILLS 0 Filed Oct. 25, 1934 2 Sheets-Sheet 2 Patented Aug. 11, 1936 PATENT OFFICE SHEET TRANSFER MECHANISM FOR ROLLING snaps I Louis Frielinghaus, Dusseldorf, Germany, assignor to Schloemann Aktiengesellschaft, Dusseldorf, Germany, a corporation of Germany Application October 25, 1934, Serial No. 749,884 In Germany November 6, 1933 6 Claims.

My invention relates to a sheet transfer mechanism for rolling mills, and particularly to open mills which have a plurality of stands arranged side by side in a line.

It is' an object of my invention .to provide a mechanism by which sheets can be transferred at'will from any one of the stands of an open mill to any other stand for further treatment.

It is a further object of my invention to provide a mechanism by which sheets can be transferred from any one of the stands of an open mill back through the interval between two adjacent stands. r With these and other obje ts in view, I will now describe my invention more in detail, reference being had to the annexed drawings, in which Fig. 1 is a plan view and Fig. 2 is a side view of a sheet transfer mechanism according to this invention,

Figs. 3, 4 and 5 are side views of its distributing elements in three different working positions.

In the drawings, l and II are two stands of an-open sheet mill arranged side by side, each of them having-,a roller table l2 in front of them, as is well known in the art. Between the stands a roller table 13 is located for passing sheets back to the other side of'the stands, where for instance furnaces may be arranged for annealing the sheets before entering one of the stands.

In the drawings, only two of the stands of an open sheet mill are represented, it being well understood, however, that my invention can be used with any number of stands.

In order to convey a sheet S delivered from any one of the stands to another, conveyers M are provided for interconnecting the roller tables l2. For delivering the sheets from a roller table l2 to a conveyer l4, distributors l are provided between each roller table and the abutting ends of the adjacent conveyer. Each of said distributors comprises two sets of rollers [6, one at each side of a roller table l2 having their axes disposed normally to the axes of the rollers of the tables l2 and parallel to the conveyers M. The rollers l6 are carried by curved levers I! which are operated by means of links l8, bell cranks l9, pivoted at 20, and a common rod 2!, actuated by a suitable crank mechanism, not shown.

Normally, when no sheets are to be transferred, the distributors l5 are in their inoperative position, as shown in Fig. 2, in which position their rollers l6 are swung sidewardly down and below the surface of the roller tables l2 so; as to keepv the gangways 24 clear. Now for transferring a sheet S from a roller table I2 to one of its two adjacent-conveyers M, the rollers R6 are raised above the surface of the roller table l2, by pulling the rod 2| to the left in Fig. 2.

Means are provided for swinging the two sets of rollers l6 of a distributor about the same or different angles, so that a sheet placed on that distributor will assume either a horizontal or an inclined position.

For this purpose, one of the bell cranks Iii-in the Figures 3-5 that controlling the right hand roller setis directly connected to rod 2|, whereas the other crank is connected to that rod by a system of links 25, which permit varying the length of the lever arm of left-hand crank I9 with respect to rod 2!. Attached to the links 25 is a hand lever 26 which can be rocked about a certain'angle to efiect the necessary adjustment of the links. A notched sector 21 is provided on an extended arm of crank l9 adapted to be engaged by a lug on lever 25 so as to secure the latter in the desired position.

When the two sets of rollers iii are moved in unison, hand lever 26 engages with the central notch of sector 21 (Fig. 3). For causing a relative motion of one set of the rollers with respect to the other, hand lever 26 is engaged with one of the two outer notches of sector 21, as will be clearly seen from Figs. 4 and 5.

Of course, any other suitable means can be used for varying the motion of the one set of rollers I6 with respect to the other, for instance a cam control.

When all the rollers Q6 of both sets of the distributor I5 are moved the same distance, the sheet will maintain its horizontal position. For delivering a sheet from the distributor rollers IE to a conveyer l 4, one set of the former is raised above or lowered below the other set, so as to place the sheet in an inclined position causing it to slide off and down onto the conveyer to which it is to be fed.

The frames of the conveyers M are supported at both ends on uprights 32 which have wheels 33, resting on tracks 34. The conveyers M are normally below the plane of the roller tables l2 and of the distributors l5, when the latter are in their raised position. To enable the conveyers M to be placed with their ends into registration with a roller set H5, both uprights 32 have a lif ing mechanism to raise the conveyer I 4 at its ends. Each lifting mechanism comprises a shaft 35 adapted to be actuated by a rod 36 from any suitable means not shown. Shaft 35 has a depending lever 3'! to which is pivoted a cross beam 38. The latter has pin and slot connections at its two ends with bell cranks 39 pivotally attached to lifting rods 40 which are pivotally connected with the uprights 32.

It will be readily apparent from the foregoing that on shaft 35 being rocked in a, clockwise direction, the right upright 32 of Figs. 1 and 2 will be lifted from its track 34 and the conveyer M will thereby assume an inclined position, sloping downwardly to the left in Fig. 2, as indicated by the dotted lines in said figure, whereas when shaft 35 is rocked in a counterclockwise direction, the left upright 32 will be raised and the conveyer l4 assume an inclination to the right in Fig. 2.

Any conveyer l 4 can thus be brought into registration at its two ends with the raised rollers l6. When a sheet S is transferred from one distributor to the next, the conveyer [4 between them is raised at first at the end of the discharging distributor, after that whereupon the sheet is fed along the conveyer M, which, at the same time, is lowered at that end and raised at the other, so that the sheet can easily pass from conveyer M to the receiving distributor I5 the rollers l6 of which having previously been moved into the right position. It will thus be seen that in this way a sheet can be transferred from any roller table l2 to any other without passing the intermediate tables or stands.

It is further to be noted that the conveyer M will be above the roller tables 13 which are arranged intermediate the tables l2, when the conveyer I4 is raised at one end, but that the roller tables l3 are on the other hand above the conveyer, when the latter is in its downward position. By the lifting movements of the conveyer being suitably controlled, a sheet can be transferred also from a conveyer I4 to a roller table l3.

In the embodiment shown, the conveyers M are chain conveyers of any suitable construction. Of course, any other type of conveyer can be used instead.

I claim as my invention:

1. In a sheet transfer mechanism for rolling mills, having a plurality of laterally disposed stands provided with roller tables, conveyers forming a transverse interconnection between said roller tables, and means located between each roller table and its adjacent conveyers and adapted to deliver a sheet from the roller table to said conveyers.

2. In a sheet transfer mechanism for rolling mills, having a plurality of laterally disposed stands provided with roller tables, conveyers forming a transverse interconnection between said roller tables, and means located between each roller table and its adjacent conveyers and adapted to be tilted about the longitudinal axis of their respective roller tables for delivering a sheet from the roller table to said conveyers.

3. In a sheet transfer mechanism for rolling mills, having a plurality of laterally disposed stands provided with roller tables, conveyers forming a transverse interconnection between said roller tables and means located between each roller table and its adjacent conveyers and adapted to deliver a sheet from the roller table to said conveyers, said means comprising two sets of supporting members, one at each side of the longitudinal axis of the roller table, and means for raising or lowering one set of said supporting members relative to the other set.

4. In a sheet transfer mechanism for rolling mills, having a plurality of laterally disposed stands provided with roller tables, conveyers 2.

forming a transverse interconnection between said roller tables, delivery means located between each roller table and its adjacent conveyers and adapted to deliver a sheet from the roller table to said conveyers, and means for lifting said conveyers at one of their ends so as to bring them into proper alignment with said delivery means.

5. In a sheet transfer mechanism for rolling mills, having a plurality of laterally disposed stands provided with roller tables, conveyers forming a transverse interconnection between said roller tables, and means located between each roller table and its adjacent conveyers and adapted to deliver a sheet from the roller tables to said conveyers, said means comprising a set of rollers at each side of the longitudinal axis of the respective roller table, said rollers being normally arranged below the surface of the roller table, and means for lifting the roller set above the plane of the roller table, said means being also adapted for raising or lowering one set of the rollers relative to the other.

6. In a sheet transfer mechanism for rolling mills having a plurality of laterally disposed stands provided with roller tables, conveyers forming a transverse interconnection between said roller tables, means located between each roller table and its adjacent conveyers and adapted to deliver a sheet thereto from the corresponding roller table, and a roller table disposed intermediate said first mentioned roller tables, said conveyers in their normal position being below the plane of said intermediately disposed roller table.

LOUIS FRIELINGHAUS. 

